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  <title>Retrieves information about the most recently executed query</title>

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</div><hr /><div id="mysqli.info" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">mysqli::$info</h1>
  <h1 class="refname">mysqli_info</h1>
  <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::$info</span> -- <span class="refname">mysqli_info</span> &mdash; <span class="dc-title">Retrieves information about the most recently executed query</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-mysqli.info-description">
  <h3 class="title">说明</h3>
  <p class="para">面向对象风格</p>
  <div class="fieldsynopsis"><span class="type">string</span> <var class="varname"><a href="mysqli.info.html">$mysqli-&gt;info</a></var>;</div>

  <p class="para">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type">string</span> <span class="methodname"><strong>mysqli_info</strong></span>
    ( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter">$link</code></span>
   )</div>

  <p class="para rdfs-comment">
   The <span class="function"><strong>mysqli_info()</strong></span> function returns a string providing
   information about the last query executed. The nature of this string is
   provided below:
  </p>
  <p class="para">
  <table class="doctable table">
   <caption><strong>Possible mysqli_info return values</strong></caption>
   
    <thead>
     <tr>
      <th>Query type</th>
      <th>Example result string</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>INSERT INTO...SELECT...</td>
      <td>Records: 100 Duplicates: 0 Warnings: 0</td>
     </tr>

     <tr>
      <td>INSERT INTO...VALUES (...),(...),(...)</td>
      <td>Records: 3 Duplicates: 0 Warnings: 0</td>
     </tr>

     <tr>
      <td>LOAD DATA INFILE ...</td>
      <td>Records: 1 Deleted: 0 Skipped: 0 Warnings: 0</td>
     </tr>

     <tr>
      <td>ALTER TABLE ...</td>
      <td>Records: 3 Duplicates: 0 Warnings: 0</td>
     </tr>

     <tr>
      <td>UPDATE ...</td>
      <td>Rows matched: 40 Changed: 40 Warnings: 0</td>
     </tr>

    </tbody>
   
  </table>

  </p>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    Queries which do not fall into one of the preceding formats are not supported.
    In these situations, <span class="function"><strong>mysqli_info()</strong></span> will return an empty string.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 parameters" id="refsect1-mysqli.info-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    <dt>
<em><code class="parameter">
link</code></em></dt>
<dd>
<p class="para">仅以过程化样式：由<span class="function"><a href="function.mysqli-connect.html" class="function">mysqli_connect()</a></span> 或 <span class="function"><a href="mysqli.init.html" class="function">mysqli_init()</a></span>
返回的链接标识。</p></dd>

   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysqli.info-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   A character string representing additional information about the most recently executed query.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-mysqli.info-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-1641">
   <p><strong>Example #1 <var class="varname"><var class="varname">$mysqli->info</var></var> example</strong></p>
   <div class="example-contents"><p>面向对象风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$mysqli&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;check&nbsp;connection&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect&nbsp;failed:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE&nbsp;TEMPORARY&nbsp;TABLE&nbsp;t1&nbsp;LIKE&nbsp;City"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;INSERT&nbsp;INTO&nbsp;..&nbsp;SELECT&nbsp;*/<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT&nbsp;INTO&nbsp;t1&nbsp;SELECT&nbsp;*&nbsp;FROM&nbsp;City&nbsp;ORDER&nbsp;BY&nbsp;ID&nbsp;LIMIT&nbsp;150"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">info</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>过程化风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$link&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;check&nbsp;connection&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect&nbsp;failed:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"CREATE&nbsp;TEMPORARY&nbsp;TABLE&nbsp;t1&nbsp;LIKE&nbsp;City"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;INSERT&nbsp;INTO&nbsp;..&nbsp;SELECT&nbsp;*/<br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"INSERT&nbsp;INTO&nbsp;t1&nbsp;SELECT&nbsp;*&nbsp;FROM&nbsp;City&nbsp;ORDER&nbsp;BY&nbsp;ID&nbsp;LIMIT&nbsp;150"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">mysqli_info</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">mysqli_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程会输出：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
Records: 150  Duplicates: 0  Warnings: 0
</pre></div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-mysqli.info-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="mysqli.affected-rows.html" class="function" rel="rdfs-seeAlso">mysqli_affected_rows()</a> - Gets the number of affected rows in a previous MySQL operation</span></li>
    <li class="member"><span class="function"><a href="mysqli.warning-count.html" class="function" rel="rdfs-seeAlso">mysqli_warning_count()</a> - Returns the number of warnings from the last query for the given link</span></li>
    <li class="member"><span class="function"><a href="mysqli-result.num-rows.html" class="function" rel="rdfs-seeAlso">mysqli_num_rows()</a> - Gets the number of rows in a result</span></li>
   </ul>
  </p>
 </div>


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